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Note 8 - Geographic Information and Major Customer Data (Tables) | 6 Months Ended
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Jun. 30, 2022
Notes Tables |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Six months ended June 30, |  |  | Three months ended June 30, |
|  | 2022 (unaudited) |  |  | 2021 (unaudited) |  |  | 2022 (unaudited) |  |  | 2021 (unaudited) |
Revenues based on customer location: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States |  | $ | 13,737 |  |  | $ | 10,498 |  |  | $ | 6,991 |  |  | $ | 6,548 |
Europe and Middle East |  |  | 3,874 |  |  |  | 2,005 |  |  |  | 2,772 |  |  |  | 906 |
Asia Pacific (1) |  |  | 49,975 |  |  |  | 43,356 |  |  |  | 23,432 |  |  |  | 23,003 |
|  | $ | 67,586 |  |  | $ | 55,859 |  |  | $ | 33,195 |  |  | $ | 30,457 |
(1) China |  | $ | 41,572 |  |  | $ | 36,448 |  |  | $ | 18,601 |  |  | $ | 19,189 |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Six months ended June 30, |  |  | Three months ended June 30, |
|  | 2022 (unaudited) |  |  | 2021 (unaudited) |  |  | 2022 (unaudited) |  |  | 2021 (unaudited) |
Customer A |  |  | 11 | % |  |  | 21 | % |  |  | 11 | % |  |  | 27 | %
Customer B |  |  | *) |  |  |  | 10 | % |  |  | *) |  |  |  | *) |

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